Re: Fail to Boot Windows 7 after installing OpeBSD 5.1, then Ubuntu 12.04 with Grub 1
I think the OpenBSD installation messed it up. Especially since you say there was no option for win7 in its bootloader.
No, you don't need to use win7 bootloader, grub2 on the MBR is just fine. The problem is if OpenBSD really messed up win7 boot, it's not the fault of the ubuntu grub2 that can't boot it now. In fact, it is trying to, that error message is from win7, not grub2.
The boot flag should stay on the windows partition, I am assuming OpenBSD did that too since it's on its partition.
If you plan to run any repair with the win7 dvd, first use Gparted and activate the boot flag on sda1, deactivate it on sda2. The repair process should sort out win7 depending what the issue is. First try if only moving the boot flag can help.
Also, I am not sure what filesystem you used for OpenBSD but ubuntu says it's unknown, which means it will never detect it and add it to grub2. I have no idea why it doesn't recognize the filesystem.
Darko.
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Ubuntu 18.04 LTS 64bit
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